Studies on complexes of 4-(2-thiazolyl)thiosemicarbazide with some bivalent metal ions

Summary The 4-(2-thiazolyl)thiosemicarbazide HTTSC, reacts with metal ions to yield two types of complex M(HTTSC)₂ Cl₂ M=cobalt(II), nickel(II) copper(II), cadmium(II), or mercury(II)] and M(TTSC)₂] M=cobalt(II), nickel(II) or copper(II)]. These complexes have been characterized by elemental analyses and studied by magnetic and spectroscopic techniques. Tetrahedral coordination around cadmium(II) and mercury(II), square planar geometry around cobalt(II) and nickel(II) in Co(TTSC)₂] and Ni(HTTSC)₂]Cl₂, respectively, and octahedral stereochemistry for the remaining complexes is proposed.